154340
Which of these materials requires the least value of magnetic field strength to magnetise it?
1 Nickel
2 Silver
3 Tungsten
4 Sodium chloride
Explanation:
A Nickel is a ferromagnetic material which get strongly magnetized when placed in an external magnetic field. Therefore, nickel has least value of magnetic field strength to magnetize it.
UPSEE - 2018
Magnetism and Matter
154341
In a superconductor, critical magnetic field
1 increases if temperature decreases
2 does not depend on temperature
3 increases if temperature increases
4 remains constant
Explanation:
A The critical temperature for superconductor is the temperature at which the electrical resistivity of metal falls to zero. So, in a superconductor critical magnetic field increases if temperature decreases.
SRMJEEE-2017
Magnetism and Matter
154342
Magnetic lines of force
1 Cannot intersect at all
2 Intersect within the magnet
3 Intersect only at south and north poles
4 Intersect at neutral point only
Explanation:
A Two magnetic field lines do not interest each other due to the fact the resultant force on a north pole at any point can be only in one direction but if the two magnetic lines get interest one another this means that at the point of intersection will be along two direction, which is not possible.
SRMJEEE-2017
Magnetism and Matter
154343
Substances, when placed in a magnetic field acquire feeble magnetization in the direction opposite to that of the applied field are called
1 Diamagnetic substances
2 Ferromagnetic substances
3 Paramagnetic substances
4 Ferromagnetisation
Explanation:
A Diamagnetic substances when place in a magnetic field acquire feeble magnetization in a direction opposite to that of the applied field.
AMU-2017
Magnetism and Matter
154347
If a diamagnetic substance is brought near the north or the south pole of a bar magnet, it is
1 repelled by the north pole and attracted by the south pole
2 attracted by the north pole and repelled by the south pole
3 attracted by both the poles
4 repelled by both the poles
Explanation:
D According to Lenz's law, "when external magnetic field is applied, dipoles are induced in the diamagnetic materials in such a way that induced dipoles which opposes the external magnetic field. Hence, when a diamagnetic substance is brought near the north or south pole of a bar magnet, they are weekly repelled by the external field.
154340
Which of these materials requires the least value of magnetic field strength to magnetise it?
1 Nickel
2 Silver
3 Tungsten
4 Sodium chloride
Explanation:
A Nickel is a ferromagnetic material which get strongly magnetized when placed in an external magnetic field. Therefore, nickel has least value of magnetic field strength to magnetize it.
UPSEE - 2018
Magnetism and Matter
154341
In a superconductor, critical magnetic field
1 increases if temperature decreases
2 does not depend on temperature
3 increases if temperature increases
4 remains constant
Explanation:
A The critical temperature for superconductor is the temperature at which the electrical resistivity of metal falls to zero. So, in a superconductor critical magnetic field increases if temperature decreases.
SRMJEEE-2017
Magnetism and Matter
154342
Magnetic lines of force
1 Cannot intersect at all
2 Intersect within the magnet
3 Intersect only at south and north poles
4 Intersect at neutral point only
Explanation:
A Two magnetic field lines do not interest each other due to the fact the resultant force on a north pole at any point can be only in one direction but if the two magnetic lines get interest one another this means that at the point of intersection will be along two direction, which is not possible.
SRMJEEE-2017
Magnetism and Matter
154343
Substances, when placed in a magnetic field acquire feeble magnetization in the direction opposite to that of the applied field are called
1 Diamagnetic substances
2 Ferromagnetic substances
3 Paramagnetic substances
4 Ferromagnetisation
Explanation:
A Diamagnetic substances when place in a magnetic field acquire feeble magnetization in a direction opposite to that of the applied field.
AMU-2017
Magnetism and Matter
154347
If a diamagnetic substance is brought near the north or the south pole of a bar magnet, it is
1 repelled by the north pole and attracted by the south pole
2 attracted by the north pole and repelled by the south pole
3 attracted by both the poles
4 repelled by both the poles
Explanation:
D According to Lenz's law, "when external magnetic field is applied, dipoles are induced in the diamagnetic materials in such a way that induced dipoles which opposes the external magnetic field. Hence, when a diamagnetic substance is brought near the north or south pole of a bar magnet, they are weekly repelled by the external field.
154340
Which of these materials requires the least value of magnetic field strength to magnetise it?
1 Nickel
2 Silver
3 Tungsten
4 Sodium chloride
Explanation:
A Nickel is a ferromagnetic material which get strongly magnetized when placed in an external magnetic field. Therefore, nickel has least value of magnetic field strength to magnetize it.
UPSEE - 2018
Magnetism and Matter
154341
In a superconductor, critical magnetic field
1 increases if temperature decreases
2 does not depend on temperature
3 increases if temperature increases
4 remains constant
Explanation:
A The critical temperature for superconductor is the temperature at which the electrical resistivity of metal falls to zero. So, in a superconductor critical magnetic field increases if temperature decreases.
SRMJEEE-2017
Magnetism and Matter
154342
Magnetic lines of force
1 Cannot intersect at all
2 Intersect within the magnet
3 Intersect only at south and north poles
4 Intersect at neutral point only
Explanation:
A Two magnetic field lines do not interest each other due to the fact the resultant force on a north pole at any point can be only in one direction but if the two magnetic lines get interest one another this means that at the point of intersection will be along two direction, which is not possible.
SRMJEEE-2017
Magnetism and Matter
154343
Substances, when placed in a magnetic field acquire feeble magnetization in the direction opposite to that of the applied field are called
1 Diamagnetic substances
2 Ferromagnetic substances
3 Paramagnetic substances
4 Ferromagnetisation
Explanation:
A Diamagnetic substances when place in a magnetic field acquire feeble magnetization in a direction opposite to that of the applied field.
AMU-2017
Magnetism and Matter
154347
If a diamagnetic substance is brought near the north or the south pole of a bar magnet, it is
1 repelled by the north pole and attracted by the south pole
2 attracted by the north pole and repelled by the south pole
3 attracted by both the poles
4 repelled by both the poles
Explanation:
D According to Lenz's law, "when external magnetic field is applied, dipoles are induced in the diamagnetic materials in such a way that induced dipoles which opposes the external magnetic field. Hence, when a diamagnetic substance is brought near the north or south pole of a bar magnet, they are weekly repelled by the external field.
154340
Which of these materials requires the least value of magnetic field strength to magnetise it?
1 Nickel
2 Silver
3 Tungsten
4 Sodium chloride
Explanation:
A Nickel is a ferromagnetic material which get strongly magnetized when placed in an external magnetic field. Therefore, nickel has least value of magnetic field strength to magnetize it.
UPSEE - 2018
Magnetism and Matter
154341
In a superconductor, critical magnetic field
1 increases if temperature decreases
2 does not depend on temperature
3 increases if temperature increases
4 remains constant
Explanation:
A The critical temperature for superconductor is the temperature at which the electrical resistivity of metal falls to zero. So, in a superconductor critical magnetic field increases if temperature decreases.
SRMJEEE-2017
Magnetism and Matter
154342
Magnetic lines of force
1 Cannot intersect at all
2 Intersect within the magnet
3 Intersect only at south and north poles
4 Intersect at neutral point only
Explanation:
A Two magnetic field lines do not interest each other due to the fact the resultant force on a north pole at any point can be only in one direction but if the two magnetic lines get interest one another this means that at the point of intersection will be along two direction, which is not possible.
SRMJEEE-2017
Magnetism and Matter
154343
Substances, when placed in a magnetic field acquire feeble magnetization in the direction opposite to that of the applied field are called
1 Diamagnetic substances
2 Ferromagnetic substances
3 Paramagnetic substances
4 Ferromagnetisation
Explanation:
A Diamagnetic substances when place in a magnetic field acquire feeble magnetization in a direction opposite to that of the applied field.
AMU-2017
Magnetism and Matter
154347
If a diamagnetic substance is brought near the north or the south pole of a bar magnet, it is
1 repelled by the north pole and attracted by the south pole
2 attracted by the north pole and repelled by the south pole
3 attracted by both the poles
4 repelled by both the poles
Explanation:
D According to Lenz's law, "when external magnetic field is applied, dipoles are induced in the diamagnetic materials in such a way that induced dipoles which opposes the external magnetic field. Hence, when a diamagnetic substance is brought near the north or south pole of a bar magnet, they are weekly repelled by the external field.
154340
Which of these materials requires the least value of magnetic field strength to magnetise it?
1 Nickel
2 Silver
3 Tungsten
4 Sodium chloride
Explanation:
A Nickel is a ferromagnetic material which get strongly magnetized when placed in an external magnetic field. Therefore, nickel has least value of magnetic field strength to magnetize it.
UPSEE - 2018
Magnetism and Matter
154341
In a superconductor, critical magnetic field
1 increases if temperature decreases
2 does not depend on temperature
3 increases if temperature increases
4 remains constant
Explanation:
A The critical temperature for superconductor is the temperature at which the electrical resistivity of metal falls to zero. So, in a superconductor critical magnetic field increases if temperature decreases.
SRMJEEE-2017
Magnetism and Matter
154342
Magnetic lines of force
1 Cannot intersect at all
2 Intersect within the magnet
3 Intersect only at south and north poles
4 Intersect at neutral point only
Explanation:
A Two magnetic field lines do not interest each other due to the fact the resultant force on a north pole at any point can be only in one direction but if the two magnetic lines get interest one another this means that at the point of intersection will be along two direction, which is not possible.
SRMJEEE-2017
Magnetism and Matter
154343
Substances, when placed in a magnetic field acquire feeble magnetization in the direction opposite to that of the applied field are called
1 Diamagnetic substances
2 Ferromagnetic substances
3 Paramagnetic substances
4 Ferromagnetisation
Explanation:
A Diamagnetic substances when place in a magnetic field acquire feeble magnetization in a direction opposite to that of the applied field.
AMU-2017
Magnetism and Matter
154347
If a diamagnetic substance is brought near the north or the south pole of a bar magnet, it is
1 repelled by the north pole and attracted by the south pole
2 attracted by the north pole and repelled by the south pole
3 attracted by both the poles
4 repelled by both the poles
Explanation:
D According to Lenz's law, "when external magnetic field is applied, dipoles are induced in the diamagnetic materials in such a way that induced dipoles which opposes the external magnetic field. Hence, when a diamagnetic substance is brought near the north or south pole of a bar magnet, they are weekly repelled by the external field.
